package org.someas.utils{

	/**
	*The MIT License

	*Copyright (c) 2009 Loki Tang lokitang@gmail.com

	*Permission is hereby granted, free of charge, to any person obtaining a copy
	*of this software and associated documentation files (the "Software"), to deal
	*in the Software without restriction, including without limitation the rights
	*to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	*copies of the Software, and to permit persons to whom the Software is
	*furnished to do so, subject to the following conditions:

	*The above copyright notice and this permission notice shall be included in
	*all copies or substantial portions of the Software.
	*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	*IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	*FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	*AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	*LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	*OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	*THE SOFTWARE.
	**/
	import flash.events.EventDispatcher;
	import flash.display.DisplayObject;
	import flash.display.DisplayObjectContainer;

	public class ChildrenUtils extends EventDispatcher{
		private var _father:DisplayObjectContainer;
		public function ChildrenUtils(){
		}
		static public function registerFather(dc:DisplayObjectContainer):void{
			if( dc ){
				_father = dc;
			}else{
				throw new Error("Display father is null") ;
			}
		}
		static public function removeChild(d:DisplayObject):void{
			if( d ){
				if( _father.numChildren > 0 ){
					try{
						_father.removeChild( d );
					}catch( e:Error ){
						recursionRemoveChild( _father, d );
					}
				}else{
					trace("Father has no child");
				}
			}else{
				throw new Error("Child for remove is null");
			}
		}
		static private function recursionRemoveChild(container:DisplayObjectContainer,child:DisplayObject):void{
			for( var i:uint = 0; i < container.numChildren; i++ ){
				var tempContainer:DisplayObjectContainer = container.getChildAt(i) as DisplayObjectContainer;
				if( tempContainer ){
					if( tempContainer is DisplayObjectContainer ){
						if( tempContainer.contains( child ) ){
							try{
								tempContainer.removeChild( child );
							}catch( e:Error ){
								recursionRemoveChild( tempContainer, child );
							}
						break;
						}
					}
				}
			}
		}
	}
}
